text: /*-
   * Copyright 2007-2009 Colin Percival
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * This file was originally written by Colin Percival as part of the Tarsnap
   * online backup system.
   */
  #ifndef _SYSENDIAN_H_
  #define _SYSENDIAN_H_
  
  
  /* If we don't have be64enc, the <sys/endian.h> we have isn't usable. */
  #if !HAVE_DECL_BE64ENC
  #undef HAVE_SYS_ENDIAN_H
  #endif
  
  #ifdef HAVE_SYS_ENDIAN_H
  
  #include <sys/endian.h>
  
  #else
  
  #include <stdint.h>
  
  #ifdef _MSC_VER
  #define INLINE __inline
  #else
  #define INLINE inline
  #endif
  
  static INLINE uint32_t
  be32dec(const void *pp)
  {
      const uint8_t *p = (uint8_t const *)pp;
  
      return ((uint32_t)(p[3]) + ((uint32_t)(p[2]) << 8) +
              ((uint32_t)(p[1]) << 16) + ((uint32_t)(p[0]) << 24));
  }
  
  static INLINE void
  be32enc(void *pp, uint32_t x)
  {
      uint8_t *p = (uint8_t *)pp;
  
      p[3] = x & 0xff;
      p[2] = (x >> 8) & 0xff;
      p[1] = (x >> 16) & 0xff;
      p[0] = (x >> 24) & 0xff;
  }
  
  static INLINE uint64_t
  be64dec(const void *pp)
  {
      const uint8_t *p = (uint8_t const *)pp;
  
      return ((uint64_t)(p[7]) + ((uint64_t)(p[6]) << 8) +
              ((uint64_t)(p[5]) << 16) + ((uint64_t)(p[4]) << 24) +
              ((uint64_t)(p[3]) << 32) + ((uint64_t)(p[2]) << 40) +
              ((uint64_t)(p[1]) << 48) + ((uint64_t)(p[0]) << 56));
  }
  
  static INLINE void
  be64enc(void *pp, uint64_t x)
  {
      uint8_t *p = (uint8_t *)pp;
  
      p[7] = x & 0xff;
      p[6] = (x >> 8) & 0xff;
      p[5] = (x >> 16) & 0xff;
      p[4] = (x >> 24) & 0xff;
      p[3] = (x >> 32) & 0xff;
      p[2] = (x >> 40) & 0xff;
      p[1] = (x >> 48) & 0xff;
      p[0] = (x >> 56) & 0xff;
  }
  
  static INLINE uint32_t
  le32dec(const void *pp)
  {
      const uint8_t *p = (uint8_t const *)pp;
  
      return ((uint32_t)(p[0]) + ((uint32_t)(p[1]) << 8) +
              ((uint32_t)(p[2]) << 16) + ((uint32_t)(p[3]) << 24));
  }
  
  static INLINE void
  le32enc(void *pp, uint32_t x)
  {
      uint8_t *p = (uint8_t *)pp;
  
      p[0] = x & 0xff;
      p[1] = (x >> 8) & 0xff;
      p[2] = (x >> 16) & 0xff;
      p[3] = (x >> 24) & 0xff;
  }
  
  static INLINE uint64_t
  le64dec(const void *pp)
  {
      const uint8_t *p = (uint8_t const *)pp;
  
      return ((uint64_t)(p[0]) + ((uint64_t)(p[1]) << 8) +
              ((uint64_t)(p[2]) << 16) + ((uint64_t)(p[3]) << 24) +
              ((uint64_t)(p[4]) << 32) + ((uint64_t)(p[5]) << 40) +
              ((uint64_t)(p[6]) << 48) + ((uint64_t)(p[7]) << 56));
  }
  
  static INLINE void
  le64enc(void *pp, uint64_t x)
  {
      uint8_t *p = (uint8_t *)pp;
  
      p[0] = x & 0xff;
      p[1] = (x >> 8) & 0xff;
      p[2] = (x >> 16) & 0xff;
      p[3] = (x >> 24) & 0xff;
      p[4] = (x >> 32) & 0xff;
      p[5] = (x >> 40) & 0xff;
      p[6] = (x >> 48) & 0xff;
      p[7] = (x >> 56) & 0xff;
  }
  
  #endif /* !HAVE_SYS_ENDIAN_H */
  
  #endif /* !_SYSENDIAN_H_ */
  